Morning Brief — Canada Import Bans, Columbus Schools Lawsuit, and AI Math Agents - September 9, 2026

The U.S. escalates the Canada trade fight with import bans and government-contract exclusions, oil pushes above 100 dollars after new Middle East attacks, Columbus City Schools joins national social-media litigation, mortgage applications fall again with refinance demand hit hardest, JPMorganChase shows how bank AI evaluation is moving toward execution and trust, OpenAI reports an agent-produced Navier-Stokes proof, and markets and Columbus weather stay tied to energy and midweek storms.